129259813161 has 8 divisors (see below), whose sum is σ = 173662039584. Its totient is φ = 85515397760.

The previous prime is 129259813153. The next prime is 129259813187. The reversal of 129259813161 is 161318952921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129259813161 - 2³ = 129259813153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129259813161.

It is not an unprimeable number, because it can be changed into a prime (129259813141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164452296 + ... + 164453081.

It is an arithmetic number, because the mean of its divisors is an integer number (21707754948).

Almost surely, 2^129259813161 is an apocalyptic number.

It is an amenable number.

129259813161 is a deficient number, since it is larger than the sum of its proper divisors (44402226423).

129259813161 is a wasteful number, since it uses less digits than its factorization.

129259813161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328905511.

The product of its digits is 233280, while the sum is 48.

It can be divided in two parts, 1292 and 59813161, that added together give a triangular number (59814453 = T₁₀₉₃₇).

The spelling of 129259813161 in words is "one hundred twenty-nine billion, two hundred fifty-nine million, eight hundred thirteen thousand, one hundred sixty-one".